Control valve



L C. BAYLES CONTROL VALVE Feb. 23, 1932.

2 Sheets-Sheet 1 Filed June 7, 1929 Y ,Y 5 T z A an F H 0 P fllll I i II INVENTOR. Lewis Bay/es BY M H15 ATTORNEY.

Feb. 23, 1932. I L. c. BAYLES V CONTROL VALVE Filed June '7, 1929 I 2Sheets-Sheet 2 INVENTOR. Lew: CBa yles I BY HIS ATTORNEY laltented F eh.23, 1932 UNITED STATES LEWIS c. BAYLES, or EASTON; PENNSYLVANIA,AssIeNoR T IneERsoLL-mn GOM=' i i PANY, or JERSEY CITY,'-.I\TEW JERSEY,A CORPORATION or NEW JERSEY common VALVE Application fi1ed June 7, 1929.seriarivb. 369,129. l

This invention relates to valves, but more particularly to a controlvalve adapted for use in connection with rock drills and simi lar'machines to control the exhaust of fluid therefrom.

One object of the invention is to maintain the valve immovable in itschamber unaffected by the vibration of the machine to which it may beapplied. Other objects will be in part obvious and in part pointed outhereinafter.

In the drawings illustrating theinvention and in which similarreferencecharacters refer to similar parts, i Figure 1 is a sectionalelevation of a'portion of a rock drill equipped with a control valveconstructed in accordance with the practice of the invention, p

Figure 2 is a view similar to Figure 1 illus- 20 trating the manner inwhich the resilient handle may be inserted in the valve, I Figure 3 is atransverse view through Figure 1 on the line 33 looking in the directionindicated by the arrows, and

Figure 4 is a view similar to Figure 1 showing a modifiedform ofthe'invention.

Referring more particularly to the drawings, and atfirst to the formof-the invention illustrated in'Figures 1 and 2, A repre- 30 sents avalve casing which may be an integral part of a rock drill cylinder B,only a portion of which is shown and having an 'exhaustfpassage Cthrough which the motive fluid may flow to the atmosphere. The cylin-The piston Dcarries an integral extension E whichis guided by a frontcylinder washer F forming a closure for the front end of the cylinderand said extension E is provided with flutes G adapted to interlock withsuitable devices for imparting the rotary movement of the piston to theworking implement against which the piston is adapted to strike.

In mechanism of the type to which the inderLB is provided with areciprocatory ham vention is shown applied means are usually provldedfor constantly introducing fluid under pressure, such ascompressed air,into I the hole being drilled for removing thecuttings therefrom. Suchmeans may consist Of the well knowl fair tube thro,ugh, which pressurefluid flows either intermittently or continuously through the drillsteel into the drill hole; v Whenjdrillihgholes of moderate depth thismethod'may suflice to maintain clean rock face for the "cutting bit ofthe work ing implement. Under certain conditions,

however, as for instance, when drilling deep holes, the method of puffblowing or the con tinuous introduction of pressure fluid .in smallquantities 'zis frequently found to be B11t toremove the cuttingsfrom'th3 drill holeQ .7 i

It' accordingly, the aim [of the present invention toequip theqdrillingmechanisln with means for periodically introducing pressure fluidinlarge quantities into the drillhole to .eflect a thorough cleansingthereofiwhenever the means ordinarily provided for this purpose is"found tobeflinadequate. To this, endfthecasiiig A'is pro vided with abore I-Iwhich'preferablyjex;

tends entirelyv through the casing to receive a control valve J'having arecess K inits periphery. which in one position of the valve J forms acontinuation of the exhaust passage 'C. By forming the recess. K in theside of the .valve J asoli dportion L remains in the valve and saidportion L is "of sufficient area to form a closure for the'eXh'aust'passage Gin-anotherposition of the yalve;

Preferably the valve J. is provided j-with a- 1 head O at one endadapted to bear against the casing Afor preventing endwise movementofthe'valvein one direction.

The valve J is preferably of, such length that an end- P thereof extendsbeyond the casing A. and the end P'rnay, if desired,"be

.of the same diameter asthe body portion of the valve. e

Means are provided for rotating the valve J and also toFhold thevalveimmovable in the bore I-Iunafl'ectedby suchvibration as maybe set-up' intheapparatus to whichthe V valve'may-be appliedg To this end the pro.-

jecting end P of the valve is provided with a transverse aperture Q, anda transverse slot R in parallelism with the aperture Q, and so arrangedthat its inner end S lies within the bore H. p

The aperture Q is adapted to accommodate a leg Tof'a resilient handle Uand the slot R is adapted to accommodate a leg V of the handle U andhaving a hook W which, in the assembled position of the handle U,extends into a socket X in thevalve J.

The legs T and V of the handle are connected by a curved spring portionY which may be under sufficient tension to tend to spread the legs T andVand'thus press the leg V firmly against the end of the casing A. Ifdesired, Tnotches Z and b may be. formed in the end of the casing Atoengage the leg V. Owing tothe inherent ten sion of the spring portionY of the handle and by reason of the fact that the legT thereof isfixedly disposed in the end'P of. the valve, the head O' ofthevalve willbe pressed firmly against the end of the casing so that, irrespective ofany vibrati'on which may be set up in the apparatus to which the valvemay be applied, the head will remaln immovablein the bore H and willtherefore only vibrate with the apparatus but not rela ti-vely thereto.

The notchesZ and b may be suitably ar-' ranged to coincide with thelimiting positions of the handle U. However, if desired,

shouldersc and d may beprovided onthe end of the casingadj acentthenotches Z and 5 respectively to act as an abutment for the 16 V,- i r;%n the modified iorm of the invention 1 llustrated in Figure 4, aresilient: handle e is shown having two symmetrical legs f and 9. Bothlegs are straight throughout their length and are joined atcorresponding ends bya curved spring portion h tending to constantlyspread the legs 0 and f. The leg fextends into the slot R wherein it isadapted tomove and the leg 6 extends intothe aperture Q, whereinit isfixedly held by a pin j which extends transversely through the "end P ofthe valve/and engages'a notclrls, in'the' leg e.

' The operation of. the device is as follows: During the normaloperation of the machine,

thejvalve J occupies theopen position in which the recess Kaiiordscommunication between the sections of the exhaust passage C so that themotive fiuid may have a free path from the cylinder B to theatmosphere.In this. position'oi the valve the leg V ofthe handle U is" inengagement withthe notch 6. Whenever it is desired to effect a thoroughcleansing ofthe drill hole, the valve J may be rotated to the closedposition and all the pressure fl'uid'flowin'g jtothe front end of thecylindermay .then be directed through the flutes G into the hole beingdrilled and the piston will remain immovable in the rearward end of thecylinder until the valve J is again opened. During the blowing operationthe valve will be held against rotation by the leg I end of the valve sothat during its manipulation it will be unnecessary for the operator toexpose his hand to the exhaust fluid issuing from the cylinder.Moreover, by thus arranging the handle the chances of injury to theoperator are entirely eliminated as the handle in either of its limitingpositions will be removed from any protuberances and sharp edges of therock drill. In some mechanisms the close proximityof the handle to the.apparatus wherewith it-is associated may not be objectionable. In rockdrills however, wherethe entire mechanism vibrates at a terrific rate itis essentialthat the handle be so located that it may be grasped withoutexposingthe operator to contact with other portions of the drillingapparatus. v

I claim: 7

casing having a passageway therethrough, a bore in the casingintersecting the passageway, a valve in the bore controlling the passageway and having an extension ,beyond the 1. A fluid controlled valvecomprising a casing, a handle having-two legs resiliently V urged.apart, transverse bores in the valve extension adapted toclosely receiveone "leg of said handle and loosely receive the other leg,

and means in the valve extension coacting bore in the casingintersecting the passage- 1 way, a valve in the bore controlling thepassageway and having an extension beyond the casing, a handle havingtwo legs resiliently urged apart, transverse bores in the valveextensionadapted to closely receive one legof said handle and looselyreceive theother leg, means. in the valvefextension coacting with the handle toholdthe-handle in the valve, and means in the casing coacting withthe handleto retain the. valve in positionin the l bore. I

# estimony whereof Ihave signed specification. I

. LEWIS CVBAYLES. 1

